Rail-join



PATBNTED NOV. 6, 1906 H. G. GILLMOR. RAIL JOINT.

APPLICATION FILED MAR.25.1905.

FIG. 1

FIG. 4

1 seems PATENT RAH-JOIN Specification of Letters Patent.

' Patented. Nov. 6, recs.

Application filed March 25,1905.- Serial No. 251,998.

Too/ll 107M710 it may concern:

Be it known that 1, lloim'rio G. GILLMon, citizen of the United States, residing at Bath, county. of Sagadahoc, State of Maine, have invented an Improvement in the Means ol'l 'orniing Joints in Rails, of which the fol lowing is a specification.

.lhe objects of my invention are, first, to

provide an cllicient means of joining rails unjointed portion of the rail at M N, looking at the end of a made-up joint. Figs. 2 and 3 are a side elevation and plan, respectively, of the joint. Fig. 4 is a vertical section through the joint at O P. Fig: 5 is a view of a locking vedge used in making up the joint.

Similar letters refer to similar parts throughout the several views.

A A are the rails to be joined.

B B are lislnbars or splice-bars.

C is a chair. D D arelocking ivedgcs, each having a projection or catch E, the purpose of which is to engage with surface of the end oi a flange oi the chair when the wedge is in place and prevent it from \Y'Ui'lilllg loose.

The joint is made up by placing the rail ends in the chair in the position shown, plac ing the splice-bars B B as shown, and insert 'ing the wedges-and driving them until the catch projection has reached the position shown in the drawings, so as to engage .with the edge of the end of a flange of the chair and prevent any withdrawal or slackening of "the wedge. The chair (J is made of elastic materials, and the dimensions of the wedge, the catch projection E, and the chair are such that the Flanges of the chair C when the wedge is being driven into place are sprung sufficiently to permit the passage of the projectionE Without permanent distortion of the chair, so that when the wedge has reached its final position these flanges by their elasticity spring back to approximately their original form and bring the edge of the end of the flange of the chair into engagelnent'with the catch E and prevent any backward movement of the wedge. The dimensions of the wedge and chair are such that with the wedge in its final position there will be an appreciable pressure exerted upon the splice-bars B B to hold them in position and upon the chair 0 to hold it in intimate contact with the bottoms of the rails joined. The forms of the wedges D and the chair C are such as to give a double wedging action, so that there is exerted a horizontal pressure upon the splice-bars B B to hold them in position and at the some time a vertical pressure upon the beveled flanges of the chair, drawing it into intimate contact with the bottoms of the rails at the joint.

The surfaces of contact of the splice-bars B B and the chair 0 with the rails are in area several times the area of any right section of the unjointed portion of the rail, and these surfaces by the pressure exerted upon them are brought into and retained in' intimate contact, so that where the rails form a part of an electrical circuit should the conductivity per unit of area at the surface of contact between the rails, the splice-bars, and the chair be less than the conductivity per unit of sectional area of the continuous portion of the rail the total conductivity through the surfaces of contact (on account of the greater area of these surfaces) and through the sectional area of the material of the chairs, splice-bars, and wedges at the joint will still be at least equal to the conductivity of the continuous unjointed portion of the rail.

It will be understood that the form of the joint may be modified materially without effect upon the principle involved. For instance, the wedges might be driven from the I claim as new, our desire to secure Letters Patent for, is-

1. In a rsilqomt, u locking-Wedge or looking-wedges, hav ng a proiection E constructed to eutoinsticellfv e' gege with surtuce of 22. member of such joint vhen driven to position, substantially as and. for the purpose described.

2. In a reiljoint, the combination of a, choir having upwerdlyprojecting elastic flanges, and a locking-wedge constructed. to engage in Wedging contact between a. memher of such joint and e Henge or flanges of said chair and having projection upon. one of its faces adapted to automatically engage with surface of e of said chair when driven into position to prevent slsckening of Wedge, substantially end for the purpose described.

3. In a mil-joint, the combination of a chair having" upwardly-projecting flanges and locking-wedges, each having a. projection upon one of its-tacos adopted to engage with :1. surface of a flange of the said choir, substantially as and for the purpose described.

4. in. amiljoint, the combination of e choir of substantially uniform sectional ares, having upwardly-projecting flanges, and two substantially like locking-Wedges, each having- :1. projection on one face adept-ed to e11- gage with a. surface at one end oil"; flange of the said chair, substantially as and for the purpose descril' e l in e rail-joint, the combination of the meeting ends of the rails, a chair having np-- Wardly-projecting flanges, and a locking- Wedge having a projection upon one of its feces adopted to engc o with usurfe-ce of a flange of the said cheu to prevent slackening of the wedge when driven into position, substcntielly end for the purposes described.

6. In a rail-joint, the combination ot the meeting en... f the rails, achair having up werdly pro t ng flanges, and locking; Wedges, each having a projection upon one of its feces adopted to engage with surfaces of the flanges of the said chair to pre ent slackening of the wedges when driven into position, substantially as and for the purposes described.

7. In a reil-joint, the combination of rails e fish-bur, s. eh ing flanges, end locking- .Lcving o projection upon one oi its feces, adopted to engage With an end of s llonge o the said chair, substantially as and for the ,urpose described.

8. In aru-il-joint, the combinetion oi rails, it fish-bar, choir having upwardly-projecting flanges, and locking-wedges esch hcving a projection upon one of its feces, adopted to engage with an. end of c flange of said. choir, substantially as and for the purpose describei 9. in a mil-joint, the combination of mils, a fish-bur, oi substantially uniform section, a. chair of substantially uniform section. hoving upwardlg projccting flanges and locking Wedges, each having at projection upon one of "as feces, adapted to engage with an end of a flange of said chair, substantially as and for the purpose described.

10. in e reitjoint, the combination oi. rails iish-bcrs, chair having upwardlyqarojecting flanges; end a locking-wedge, having a projection upon. one of its feces adapted to engage with an end of u flange of the said. chair, substantially as and for the purpose described.

11. In a reil-- ioint, combination of mils, iislnbers, a chair having upwnrdly-projecting flanges, locking-wedges each 1 ing 2;. projection upon. one of its feces ted to en sge with on end of a flange of the said choir, substantially as and for the purpose described.

12. In a mil-joint, the combination of rails, two fish oers of substantially uniform section, e choir of substantially uniform. section having upwardly-pro}eating flanges, and two substuntisll like lockingevedges, Git-OH hav ing s proji ion upon one of its feces adapt-ed to engage with an end of u ilcnge oi the said chair, substantially as and for the purpose described.

In testimony whereof I have signed my name to this speciticction in the presence of two subscribing witnesses. 

